I too have had this operation on my right knee to repair a torn miniscus (sp?), several year ago. As others have said, recovery depends much on general health and weight of the person, plus the amount of surgery. As a slim fellow in good health, and since the damage was limited, my recovery was quick. In fact, one hour after surgery I headed out to the car with crutches, abandoned them at the car, and within two weeks was climbing, kneeling and all the other good stuff. Pretty good for a 50+ year old.
Attend the post-op rehab and follow their advice to a tee to assist gaining full mobility.
Before the operation, hydrate yourself with plenty of water.
It was rather fun seeing the operation on the bedside monitor in real-time!
Doug